Key holder



FIG. 1 is a front view of a key holder showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a rear view thereof.

It being understood that the broken lines are for illustrative purposes only. 

The ornamental design for a key holder, as shown and described. 